Buffing wheel



July 14, 1953 P. A. KIETZMANN BUFFING WHEEL 2 Sheets-Sheet 1 Filed Jan. 15, 1951 PAUL A.KIETZMANN FIG.2.

July 14, 1953 P. A. KIETZMANN BUFFING WHEEL 2 Shets-Shet 2 Filed Jan. 15, 1951 FIG].

INVEJVTOR.

PAUL A.KIETZMANN ATTORNEY:

Patented July 14, 1953 UNITED STATES PATENT OFFICE 3 Claims.

The invention relates to bufling wheels and has for one of its objects to provide an improved construction of buffing wheel which is efiicient in operation.

The invention has for another objectto provide a construction of buffing wheel formed of bufiing sections inclined to the path of rotation of the wheel and cooperating to form in effect a helically arranged work performing periphery.

The invention has for a further object to provide a bufilng wheel formed of generally rectangular bufiing sections sleeved over an annular series of angularly spaced pins with each section having an arcuate outer periphery located between the radii of the buffing Wheel which pass through the axes of the pins at the ends of the buffing section whereby the work performing periphery of each pin is properly located while in operation.

The invention has for a still further object to provide a buffing wheel formed of overlying buffing sections cooperating to form air passages therebetween and at th ends thereof so that the buffing wheel when in operation creates flow of air between the buffing sections to avoid overheating.

With these and other objects in view, the invention resides in the novel features of construction and combinations and arrangements of parts as more fully hereinafter set forth.

In the drawings:

Figure 1 is a side elevation of a buffing wheel embodying the invention;

Figures 2, 3 and 4 are cross sections on the lines 2--2, 33, and 4-4 respectively of Figure 1;

Figure 5 is a side elevation with one of the plates removed and with parts broken away and in section;

Figure 6 is a peripheral elevation of the buffing wheel;

Figure 7 is a cross section on the line l--1 of Figure 1; and

Figure 8 is a perspective view of a portion of the buffing wheel.

As illustrated in the drawings, the buffing wheel embodying the invention is formed of the axially spaced plates 1 and 2, the annular series of angularly spaced pins 3 extending parallel to the axis of the bufiing wheel and between the plates, and the overlying bufiing sections 4 sleeved over the pins and clamped between the plates. The plates 1 and 2 are co-axial and are predeterminedly spaced from each other by the spacers 5 and 6 threadedly engaging each other, and the sleeve 1 fixedly secured to the plate I and threadedly engaging the spacer 6. The spacers 5 and 6 are rotatably adjustable relative to each other and the spacer 6 and sleeve 1 are rotatably adjustable relative to each other and the adjustment is such that when the bufiing wheel is mounted on the shouldered arbor 8 and secured thereto by the nut 9, th spacer 5 abuts the plate 2 and spaces the plate 2 from the plate I a predetermined distance such that the plates will clamp the bufling sections therebetween under a desired pressure. The pins 3 are shouldered pins fixedly secured to the plate 2 by being riveted thereto and extending through holes in the plate I.

As illustrated, the bufiing sections 4 are formed of fabric layers stitched together and are generally rectangular and have arcuate outer peripheries which are of smaller radius than that of the bufiing wheel, each bulfing section having a length such that its end portions are sleeved over certain of the pins 3 and its intermediate portion is sleeved over a plurality of intermediate pins 3. As shown, each bufling section has a length such that it is sleeved over four pins. Furthermore, each bufiing section has its arcuate outer periphery which is adapted to perform the Work located between the radii of the buffing wheel passing through the axes of the pins which extend through the end portions of the bufiing section so that during rotation of the bufiing wheel in either direction the outer peripheries of the buffing sections are held in place while operating upon the work and prevented from buckling because the leading ends of the outer peripheries are in rear of or behind the radius of the buffing wheel passing through the pin at the front end of the bufling section.

The buffing sections are assembled upon the pins in overlying relation to each other so that they are inclined to the path of rotation of th wheel as shown particularly in Figures 6, 7 and 8, and their outer peripheries are arranged in series to form helices, as shown particularly in Figure 6. As illustrated particularly in Figure 7, the lefthand end portion of each bufling section 4 sleeved over a pin 3 abuts the plate 2. The succeeding portion of the bufiing section sleeved over the succeeding pin is spaced from the plate by the lefthand end portion of the succeeding bufiing section, the succeeding portion of the first buifing section sleeved over the second succeeding pin is spaced from the plat by three buffing sections and the righthand end portion of the first bufling section sleeved over the third succeeding .pin is spaced from the plate by five bufling sections so that as a result each buffing section is inclined to the plate and the path of rotation of the bufiing wheel. Also as particularly illustrated in Figure 7 and Figures 3 and 4, passageways for air ar formed by the bufiing sections at the ends thereof so that during operation overheating is avoided. Entrance of the air into the bufiing wheel radially inside the buffing sections is secured by forming the plates l and 2 with the annular series of holes [0.

It will be noted that the buffing sections are sleeved over the pins near the inner peripheries of the buffing sections so that the bufling sections may be initially formed from new fabric or, if desired, the buffing sections may be formed from bufiing wheels, previously used and worn down, by cutting the same into sections and forming holes therein for receiving the pins.

What I claim as my invention is:

1. A buffing wheel comprising spaced, co-axial circular plates, pins extending between said plates and arranged in a spaced, annular series, and a plurality of bufiing sections disposed between said plates and sleeved over said pins at points adjacent the ends of said buffing sections, each of said bufling sections projecting beyond the outer peripheries of said plates and having an outer workengaging periphery located entirely between the radii of the wheel passing through the axes of the pins adjacent the ends of the section, a major portion of the ends of each buffing section beyond the outer peripheries of said plates likewise being located between the aforesaid radii.

2. A bufiing wheel comprising spaced, co-axial circular plates, pins extending between said plates and arranged in a spaced, annular series, and a plurality of bufiing sections disposed between said plates and sleeved over said pins at points adjacent the ends of said buifing sections, each of said buffing sections projecting beyond the outer peripheries of said plates and having an arcuate outer work-engaging periphery located entirely between the radii of the wheel passing through the axes of the pins adjacent the ends of the respective sections, the ends of each bufling section being substantially parallel to each other, and substantially the entire portion of the ends of each section beyond the outer peripheries of said plates likewise being located between the aforesaid radii.

3. The bufiing wheel as defined in claim 2, having a variable coupling between said plates for varying the spacing therebetween and accordingly to vary the clamping pressure exerted thereby upon said bufling sections.

PAUL A. KIETZMANN.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date Re. 15,226 Levett Nov. 15, 1921 872,966 Painter Dec. 3, 1907 968,431 Stevens Aug. 23, 1910 1,141,143 Radlein et al June 1, 1915 2,017,925 Siefen Oct. 22, 1935 2,024,691 Kent Dec. 1'7, 1935 2,033,253 Pfohl Mar. 10, 1936 2,102,836 Cyrex Dec. 21, 1937 2,226,6 4 MacFarland Dec. 31, 1940 

